HT4904 I need to repair my start up disc so I have to start up from installation disc. In doing so, my computer restarts, I hear the mac sound, then a grey screen and then turns off and goes on in this cycle endlessly. Why can't I restart from disc?

I need to repair my start up disc so I have to start up from installation disc. In doing so, my computer restarts, I hear the mac sound, then a grey screen and then turns off and goes on in this cycle endlessly. Why can't I restart from disc?

Booting From An OS X Installer Disc
  1. Insert OS X Installer Disc into the optical drive.
  2. Restart the computer.
  3. Immediately after the chime press and hold down the "C" key.
  4. Release the key when the spinning gear below the dark gray Apple
      logo appears.
  5. Wait for installer to finish loading.

Similar Messages

  • My Iphone 4 was making a weird noise, it glitched for a minute, then a blue screen appeared, it turned off and won't turn back on at all. Please help!

    Please help me! I will be so thankful!

    Try a reset, hold down the home/sleep button together until you see the apple logo and then release, then wait for the phone to boot back up.

  • My iphone I fell to the ground yesterday, from a height of approximately 1 meter. after this I trailed off, now only turns on when I plug the usb but the apple appears and just turn off and turn back, there is nothing more that I recommend doing?

    my iphone I fell to the ground yesterday, from a height of approximately 1 meter. after this I trailed off, now only turns on when I plug the usb but the apple appears and just turn off and turn back, there is nothing more that I recommend doing?

    With that behavior you need to take the iPhone to an Apple store genius bar for an out-of-warranty replacement.  In the US that is $269 for the iPhone 5.

  • My iphone came up with that timing circle and just turned off and did not come back on ? even when i charge it now it still wont turn on ,do you know the problem?

    my iphone came up with that timing circle and just turned off and did not come back on ? even when i charge it now it still wont turn on ,do you know the problem?

    If the battery was empty (and it may then take 10 to 15 minutes of charging before it will respond), then have you tried a reset ? Press and hold both the sleep and home buttons for about 10 to 15 seconds, after which the Apple logo should appear - you won't lose any content, it's the equivalent of a reboot.

  • Hi im having problems with my internet and email ive reset the network even with my wifi on ive also turned off and on airplane mode help please thank you

    hi im having problems with my internet and email Ive reset the network even with my WiFi on Ive also turned off and on airplane mode help please thank you

    hi Ive reset my network toggled the airplane on and off and turned off my carrier off then turned my phone off and turned my carrier back on but still problem persists

  • TS2771 what to do my ipod touch 4g is updated to ios6 now it has a white scren and wont turn off and to top it off the homebutton does not work at all

    what to do my ipod touch 4g is updated to ios6 now it has a white scren and wont turn off and to top it off the homebutton does not work at all please help me

    Try:
    - iOS: Not responding or does not turn on
    -When it says place the iPod in recovery mode use this program instead of the buttons.
    RecBoot: Easy Way to Put iPhone into Recovery Mode
    - If not successful and you can't fully turn the iPod fully off, let the battery fully drain. After charging for an least an hour try the above again.
    - If still not successful that indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
    Apple Retail Store - Genius Bar

  • On start up I get grey screen with wheel turning but it goes no further

    On start up I get grey screen with wheel turning but it goes no further

    Take each of these steps that you haven't already tried. Stop when the problem is resolved.
    Step 1
    The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.   
    There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
         a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
    b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, boot from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
    c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
    d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
    Step 2
    If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
    Step 3
    Sometimes a startup failure can be resolved by resetting the NVRAM.
    Step 4
    If you use a wireless keyboard, trackpad, or mouse, replace or recharge the batteries. The battery level shown in the Bluetooth menu item may not be accurate.
    Step 5
    If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
    Step 6
    Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
    Step 7
    If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
    Start up in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Post for further instructions.
    Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
    The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
    When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 10. If you ever have another problem with the drive, replace it immediately.
    If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
    If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
    Step 8
    Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
    This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
    Step 9
    If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.   
    Step 10
    Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
    Step 11
    Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
    Step 12
    This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
    Step 13
    If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

  • I need to retrieve files from my iPad but I forgot my password. I tried to restore it but then it said I had to turn off Find my iPad on my iPad. I can't do this because I can't get into it. What do I do?

    I need to retrieve files from my iPad but I forgot my password. I tried to restore it but then it said I had to turn off Find my iPad on my iPad. I can't do this because I can't get into it. What do I do?

    If the iPad was running iOS 7,  iCloud: Find My iPhone Activation Lock in iOS 7
    http://support.apple.com/kb/HT5818
    How can I unlock my iPad if I forgot the passcode?
    http://www.everymac.com/systems/apple/ipad/ipad-troubleshooting-repair-faq/ipad- how-to-unlock-open-forgot-code-passcode-password-login.html
    iOS: Device disabled after entering wrong passcode
    http://support.apple.com/kb/ht1212
    How can I unlock my iPad if I forgot the passcode?
    http://tinyurl.com/7ndy8tb
    How to Reset a Forgotten Password for an iOS Device
    http://www.wikihow.com/Reset-a-Forgotten-Password-for-an-iOS-Device
    Using iPhone/iPad Recovery Mode
    http://ipod.about.com/od/iphonetroubleshooting/a/Iphone-Recovery-Mode.htm
    Saw this solution on another post about an iPad in a school environment. Might work on your iPad so you won't lose everything.
    ~~~~~~~~~~~~~
    ‘iPad is disabled’ fix without resetting using iTunes
    Today I met my match with an iPad that had a passcode entered too many times, resulting in it displaying the message ‘iPad is disabled – Connect to iTunes’. This was a student iPad and since they use Notability for most of their work there was a chance that her files were not all backed up to the cloud. I really wanted to just re-activate the iPad instead of totally resetting it back to our default image.
    I reached out to my PLN on Twitter and had some help from a few people through retweets and a couple of clarification tweets. I love that so many are willing to help out so quickly. Through this I also learned that I look like Lt. Riker from Star Trek (thanks @FillineMachine).
    Through some trial and error (and a little sheer luck), I was able to reactivate the iPad without loosing any data. Note, this will only work on the computer it last synced with. Here’s how:
    1. Configurator is useless in reactivating a locked iPad. You will only be able to completely reformat the iPad using Configurator. If that’s ok with you, go for it – otherwise don’t waste your time trying to figure it out.
    2. Open iTunes with the iPad disconnected.
    3. Connect the iPad to the computer and wait for it to show up in the devices section in iTunes.
    4. Click on the iPad name when it appears and you will be given the option to restore a backup or setup as a new iPad (since it is locked).
    5. Click ‘Setup as new iPad’ and then click restore.
    6. The iPad will start backing up before it does the full restore and sync. CANCEL THE BACKUP IMMEDIATELY. You do this by clicking the small x in the status window in iTunes.
    7. When the backup cancels, it immediately starts syncing – cancel this as well using the same small x in the iTunes status window.
    8. The first stage in the restore process unlocks the iPad, you are basically just cancelling out the restore process as soon as it reactivates the iPad.
    If done correctly, you will experience no data loss and the result will be a reactivated iPad. I have now tried this with about 5 iPads that were locked identically by students and each time it worked like a charm.
    ~~~~~~~~~~~~~
    Try it and good luck. You have nothing more to lose if it doesn't work for you.
     Cheers, Tom

  • I was working on my iPad 1 and it turned off and now it won't turn back on.  It was 50% charged and even when I connect it to be charged it still won't turn on.  Is there a reset button?

    I was working on my iPad and it turned off suddenly and now it won't turn back on.  It was at least 50% charged and when I tried to connect the charger it still will not come on.  Is there a reset button?

    Thank you so much!  It worked, I was reading around and saw this has happened to a number of iPad users.  Thank you for your prompt response, I was so worried I broke it or something.

  • I was updating my phone and it turned off and won't come back on

    I was trying to update my iphone 5s yesterday and it shut off and now it won't come back on. I've had it plugged in all night and have tried holding the home and sleep button but nothing works

    Try holding the home and sleep buttons for as long as a minute.  Try it a few times.
    Are you sure it's plugged into a good outlet using a good charger and cable?
    Else, take it in to Apple and let them look at it... you have a 1 year warranty.

  • Ipod nano 7th: Screen flashes white (turns off) and stops the music.

    I just got a brand new Ipod nano 7th: Less than 10 seconds after the song starts playing the screen flashes white, the apple logo shows up and it returns to 'home' screen. Battery is full. Tried to restart but that didnt help!
    What could be the problem?

    Hi joannefromhkg,
    If your iPod nano (7th generation) will not turn on at all I would suggest that you troubleshoot using the steps in this article - 
    iPod nano (7th generation): Hardware troubleshooting
    Specifically -
    Follow these steps if your iPod a power-related issue.
    Will not turn on or screen remains dark
    Connect iPod to power for at least ten minutes to ensure that the battery has enough charge to allow iPod to turn on.
    If iPod does not turn on after ten minutes, try resetting it while it is still connected to power. Reset the iPod by holding down the Sleep/Wake button and the Home button for at least six seconds or until you see the Apple logo appear.
    If the Apple logo appears on the display, connect iPod to a computer and verify that it appears in iTunes and can play music. If iPod appears in iTunes and can play music, no further troubleshooting is needed.
    If the screen remains dark and will not turn on, then your iPod may need service.
    And -
    Issue not resolved
    If the issue is still not resolved, please read this information on servicing your iPod.
    Thanks for using Apple Support Communities.
    Best,
    Brett L 

  • HT1414 so i was downloading ios 7 and it turned off and turn back on but says i need to plug my phone into itunes but i dont know what to do next

    so i was downloading ios 7 and it turned my iphone off and now it say i need to plug into itunes help please

    you'll need to use itunes to get your phone out of recovery mode, restore with itunes
    http://support.apple.com/kb/ht1808

  • Grey screen with message "turn off computer with power button until switch off then press again power button"

    Dear all,
    I'm very hungry with my iMac and my Time Capsule :
    I try for two weeks to restore my iMac without any success...
    I wait 80 hours to finally have the message again and again : "to restart your computer : turn off computer with power button until switch off then press again power button".
    But my iMac do not work !
    Could you help me?

    Hello, that's a kernel panic...
    http://thexlab.com/faqs/kernelpanics.html
    Could be many things, we should start with this...
    "Try Disk Utility
    1. Insert the Mac OS X 10.6 Install disc, then restart the computer while holding the C key.
    2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)
    *Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
    3. Click the First Aid tab.
    4. Select your Mac OS X volume.
    5. Click Repair Disk, (not Repair Permissions). Disk Utility checks and repairs the disk."
    http://docs.info.apple.com/article.html?artnum=106214
    Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
    (Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
    If perchance you can't find your install Disc, at least try it from the Safe Boot part onward.

  • I updated to iTunes 10.5 on Vista. As with iTunes 10.0, The DEP will not allow iTunes to open.  WHEN IS APPLE GOING TO ADDRESS THIS ISSUE?  I can't update my telephone or iPod.  I can't even open the iTunes program!!!

    I am sick of dealing with this issue.  I wish not that I had never even started using any Apple products, beginning with iTunes.  WHEN IS APPLE GOING TO ADDRESS THIS ISSUE AND MAKE ITUNES SOMEHOW COMPATIBLE WITH DEP IN WINDOWS VISTA?
    That being said, Is there any way to resolve this?  What I did in the past is completely wipe ALL Apple files from my computer, and install an older version of iTunes.  It was at least functional.  It seems that any version of iTunes 10.0 or more recent is not compatible with the Data Execution Prevention in Windows.  You can not remove iTunes from DEP, yet DEP prevents iTunes from running.
    The down side is that I can't get the latest updates for my iPhone or iPod.  Now, I have a new phone for my husband that needs syncing on my iTunes, and I can't do that because iTunes won't even open.
    Can somebody help me out with this, please? 

    OK, lets do a complete overhaul to make sure it's working ok.
    First to check your Windows system file for any corruption:
    Go to command prompt (START/ALL PROGRAMS/ACCESSORIES right mouse click "command prompt" and choose "Run as Administrator"
    type in
    sfc /scannow
    let Windows fix any system files that need to be repaired.
    Restart the computer.
    Start iTunes and see if it is ok.
    If it doesn't, will have to go through the whole process of uninstalling and installing acccording to the following steps:
    1. Go to Microsoft website to fix install and Unistall problems. Click "Run now" from Fix it to remove all iTunes & related installer files:
    http://support.microsoft.com/mats/Program_Install_and_Uninstall
    Be aware that Windows Installer CleanUp Utility will not remove the actual program from your computer. However, it will remove the installation files so that you can start the installation, upgrade, or uninstall over.
    2. You should remove all instances of iTunes and the rest of the components listed below:
    it may be necessary to remove all traces of iTunes, QuickTime, and related software components from your computer before reinstalling iTunes.
    Use the Control Panel to uninstall iTunes and related software components in the following order:
    iTunes
    QuickTime
    Apple Software Update
    Apple Mobile Device Support
    Bonjour
    Apple Application Support (iTunes 9 or later)
    (Referenceinstructions from Apple article listed here: http://support.apple.com/kb/HT1923 to remove all components)
    3. Reboot your computer. Next, download iTunes from here:http://www.apple.com/itunes/download/ and install from scratch

  • How do you get the mail sidebar to remain visible when mail is turned off and on?

    I am using OS X Yosemite on an iMac with Mail version 8.1.  How do I get the mail sidebar to remain open so I don't have to reopen it each time I open the mail app? 

    You are not saying which Pages you have on the iMac but I presume you Pages 5. To add a period you use the keyboards key for a period. A Mac is not an iPad. They behave differently. Autocaps doesn't exist in Pages 5 but did in Pages 09 and Pages 08.

Maybe you are looking for